// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/compositor/paint_cache.h"

#include "cc/playback/display_item_list.h"
#include "ui/compositor/paint_context.h"

namespace ui {

PaintCache::PaintCache()
    : has_cache_(false)
{
}

PaintCache::~PaintCache()
{
}

bool PaintCache::UseCache(const PaintContext& context,
    const gfx::Size& size_in_context)
{
    if (!has_cache_)
        return false;
    DCHECK(context.list_);
    gfx::Rect bounds_in_layer = context.ToLayerSpaceBounds(size_in_context);
    context.list_->CreateAndAppendItem<cc::DrawingDisplayItem>(bounds_in_layer,
        display_item_);
    return true;
}

void PaintCache::SetCache(const cc::DrawingDisplayItem& item)
{
    item.CloneTo(&display_item_);
    has_cache_ = true;
}

} // namespace ui
